Figured this a dungeon topic with it's political implications.
I've been drawn to this economic theory for a few years now as my occupation was affected by the economic downturn of 07-08. Like so many. What interested me was this notion that we hear of the national debt as being something that is ominous and foreboding which will affect generations to come. The standard line in political discourse. Modern monetary theory or, MMT regards this notion as a cop out for austerity. As one prominent MMT economist Bill Mitchell describes the intention of this unorthodox aspect of economics, is the notion that MMT can be liken to a "lens", focusing on what is really just how the function of a sovereign issuer of fiat currency operates within a financial system. And what it shows in it's realization of our currency and it's usage is a disconnect with fiscal policy and the reality of how this system works. It's interesting to note that Japan is actually writing down about half of it's national debt which is about double of it GDP.
The mystery of the national debt: http://neweconomicperspectives.org/2018/08/the-explicable-mystery-of-the-national-debt.html#more-11306
MMT simplified: https://modernmoney.wordpress.com/
When I hear a politician, (on either side) bloviating about the debt and future generations, anymore I just raise an appropriate finger and utter go blow.

Unfortunately the current financial system is above the heads of mainstream economists. Politicians just ape what the conventional seemingly unchallangeable economic doctrine is. Then they make sure the policies they enact make good on the needs of the few whom support them financially.

Or we could evolve capitalism into a democratically run system where workers have a say in the game. Worker cooperatives. The market system can be contrived any way humans can think of. From barter, to slavery then feudalism to capitalism, communism, socialism. What ever provides the best outcome for the better percentage of people.https://www.rdwolff.com/capitalism_is_not_the_market_system